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[X86] Teach Clang about -mfentry flag

Description

[X86] Teach Clang about -mfentry flag

Replace mcount calls with calls to fentry.

Reviewers: hfinkel, craig.topper

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D28001

Details

Committed
niravdJan 31 2017, 9:00 AM
Differential Revision
D28001: [X86] Teach Clang about -mfentry flag
Parents
rL293648: [X86] Implement -mfentry
Branches
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